330 



together in copula, the female being firmly grasped in the middle by the power- 

 ful anterior antenna 1 of the male. 



/)i*ti-<l>titi - . Ualtie ( Lilljehorgt. British Isles (Brady),- coast of France 

 (Canu). 



Gen. 75. Pseudotachidius, Scntt. is!s. 



Generic Characters. "Body robust, with the anterior division considerably 



expanded and rather sharply marked oft from the posterior. Rostral projection 

 i-onically produced, genital Moment in female distinctly subdivided. Caudal ranii 

 very >hort. Anterior antenna- short and stout, 6-articulate, and clothed with 

 stron; ciliated setae; those in male less strongly hinged than in Tin-hulins. Posterior 

 antenna 1 with the proximal joint not subdivided, outer ramus rather large 3-arti- 

 culnte. Oral parts on the whole more fully developed than in Ttn-li'nl'ms. Natatory 

 ley- dcnsi'ly spinulose; 1st pair with the inner ramus distinctly .'{-articulate and 

 much larger lhan the outer, being rather dilated at the base and angularly bent 

 in the middle: inner ramus of i ; nd and 3rd pair in male slightly transformed. 

 L.-ist pair of legs very small. but with the distal joint well defined. 



/.'< nun-/.*. This genus, established by Tlu Scott, differs conspicuously in some 

 respects from T<i<-lii(linx. though exhibiting a general resemblance to that genus 

 as re-.-inl> outward appearance and the structure of the natatory legs. Only a 

 single species i^ ; is yet known. 



Pseudotachidius coronatus, s<-ott. 

 ri'i. ccxx). 



/ . uiliiliirliiiliux i-'ii-iinit/ii*. Tl.. Sr..M. A'l'liti.Mi-. in tin- Fauna of l,<>rh Kym-: Sixlernth Annual 

 Report of ill- Fi-h.-rs |{..anl lor S.-,,tlan.|. I'art 111, p. 2<)7. JM. XIII, 9g8. ^ *>. I'l. XV, 



Bgs. 14. 



ii- < 'hiinirl//:-. F(,inil,. llody ^lioi't and stout, with the anterior 

 oblong i|iiailrani;iil:ir in outline and much broader than the posterior. 

 Cephalic segmenf large, almost ei|iiall]iiu in length the 1 succeeding segments 

 ciiinbincd; rostral projection rather proiniiiriit and obtusely acuminate at the 

 tip. \\hich carrie- ~1 delicate hair-like bristles. Last iedi^eroiis segment much 

 mirrourr than the pi-ecrdin.u r ones. ;i nd slightly produced on either side. Uro- 

 soine about half the length of the anterior division, and of almost uniform 

 width throughout, posterior rd^e of the segment - minutely spinulose: last segment 



