66 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



It is probably the same as A. typica (Bate) which is recorded 

 by Verrill (Am. Jour. Sci. ser. 3, vol. 10, p. 38) from the Noank 

 region. He did not describe it but a comparison of specimens 

 so labelled in Peabody Museum as well as of an unpublished 

 figure by S. I. Smith confirm this identity. 



Ampelisca compressa Holmes. 

 1903. Ampelisca compressa, Holmes, Amer. Naturalist, vol. 



37. P- 273- 



1905. Ampelisca compressa, Holmes, Bull. U. S. Bur. Fish., 

 vol. 24, p. 480, pi. 6, fig. I. 



This species I have never met with either at Woods Hole or 

 along the Connecticut coast although Holmes states that it is the 

 most common species of Ampelisca in the Woods Hole region. 



I quote Holmes' description verbatim : 



" Body strongly compressed and generally strongly flexed ; 

 head markedly shorter than first three segments of thorax ; first 

 antennse shorter than peduncle of second pair; third joint of 

 peduncle a little shorter than first ; flagellum only a little longer 

 than peduncle, second antennse slender, over half length of body 

 in female, and much longer than body in adult male ; peduncle in 

 male over a third length of body; last joint a little shorter than 

 preceding one ; first four coxal plates higher than their segments, 

 the first considerably expanded below ; first and second peraeo- 

 pods with dactyl slender and longer than two preceding joints. 

 Posterior perseopods with basal joint widely expanded ; ischium 

 as broad as long ; merus with a posterior lobe extending to middle 

 of carpus. Postero-lateral angle of third abdominal segment 

 broadly rounded ; fourth abdominal segment in both sexes with 

 a prominent dorsal crest which increases in height posteriorly 

 and carries a pair of short setae on its posterior margin ; terminal 

 uropods similar in two sexes, furnished with only a few short 

 spinules and setse ; outer ramus of nearly same width throughout 

 its length ; telson about two-thirds as wide as long, lobes rather 

 obtuse distally, but with inner angles subacute." 



Length 6 mm.. 



Distribution : Vineyard Sound ; Newport, Rhode Island ; off 

 Block Island ; Long Island Sound. 



It is found, according to Miss Rathbun, from the surface to 

 depths of 47 fathoms. 



