, which is herein described as a newspecies.
MATERIAL AND METHODS
The type specimens were collected from the South China Sea, fixed in 10% formalin. The specimens were extracted from benthic samples using a 38 μ m sieve and the colloidal silica Ludox TM-50 suspension centrifugation flotation
unknown species, that is herein described as a newspecies. Its systematic position is discussed with morphological characters and 16S rRNA gene sequence.
MATERIAL AND METHODS
Sample collection.— The material examined in the present study was collected by trawling from the Yellow Sea on 19
mimeticus Matheson and related species as H. rugosus Roberts and H. eremicus Wells, all belonging to the subgenus Paraliaphlus Guignot, 1930 . He examined a number of specimens and found a probable newspecies from Baja California (Mexico). After examination of these specimens I was convinced of the
coast (Pinkster, 1993 ).
Between 2008 and 2012, samplings were realised in springs, wadis and wells around Oum El Bouaghi. Among the samples collected, individuals belonging to a newspecies of the Echinogammarus simoni -group were found at several sites located on Mount El Hamra.
188 Newspecies of Hydrellia reared from aquatic macrophytes in Pakistan (Diptera: Ephydridae) D. L. DEONIER Five newspecies of Hydrellia are described and illustrated from adult specimens which were reared from aquatic macrophytes at the Commonwealth Inst. of Biol. Control in Pakistan
projecting posteroventral tooth of epimeral plate 3. The endemic genus Eocorophium is limited to north-east Asia and consists of the species E. kitamori (Nagata, 1965 ) from the shallow waters of Hong Kong and Japan (Nagata, 1965 ; Hirayama, 1990 ; fig. 1). In this paper we add one newspecies
exhibited some distinctive characters differentiating it from the other three known Parandania species. The present work describes this newspecies.
Material and methods
The present material was collected by ROV trawling, during expeditions to hydrothermal vents in the Okinawa Trough by the
species was found in a recent examination of specimens from the Marine Environmental Monitor Centre of Guangxi collected from Beihai, Guangxi in 2012. Although only a single specimen was captured, it was easily recognised as a representative of a newspecies by the bifurcate top of intercalary rostriform
specimens, all of them collected in the nineteenth century; we now report one more specimen herein, the first collected in over 90 years. By contrast, our newspecies O. irmae is based on 60 specimens taken at multiple sites in Colombia and Ecuador. This appears to be largely the result of more effective
the newspecies, I. chaiyaphum, M. phuvasae , and P. microchelys. Additionally the habitat of P. microchelys is briefly documented, Isometopus siamensis is diagnosed, and a checklist of the Isometopinae from Thailand, following the classification system of Herczek (1993) , is provided