684 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



whence it is difficult to extract those that belong to any definite 

 species. The same is found to be true of the male; Vogt copied 

 Nordmann's and Kr0yer's figures which gave incorrect details, and in 

 the enlarged figure which he himself added (1877, pi. 4, fig. 4) he 

 made some serious blunders which have remained uncorrected up 

 to the present time. This is the only detailed figure of the male 

 which has ever been pubhshed, and yet in it the "firet antenna" 

 has no real existence, the "second antenna" is really the first one, 

 and the "palp" is the second antemia, while he failed to see the fii-st 

 maxillae at all. He did see them in his figure of the mouth parts of 

 the female (fig. 7), but he called them there the "palp," which would 

 make them correspond in his judgment with the second antennae of 

 the male. 



CLAVELLA RECTA, new species. 

 Plate 50, figs. 183 and 184. 



Host and record of specimens. — Seven females with egg strings 

 were obtained from the dorsal and caudal fins of Selastodes melanops, 

 locally known as "black bass," at Sitka, Alaska, July 28, 1903. 



The largest and best preserved specimen has been selected as the 

 type of the species and has received the number 43519, U.S.N.M. 

 The others become paratypes, with the number 38593, U.S.N.M. 



Specific characters of female. — Cephalothorax thick, cylindrical, 

 somewhat longer than the trunk; head not enlarged, nor covered 

 with a dorsal cai'apace, but pointed anteriorly; trunk subquadri- 

 lateral in outline, with rounded corners and convex dorsal and 

 ventral surfaces; genital process a ridge or lump not projecting 

 much, bordered by a similar ridge on either side, the two side ones 

 meeting at a point in front of (ventral to) the median one; egg 

 strings eUipsoidal, about the length of the trunk; eggs arranged in 

 10 or 12 longitudinal rows, about 15 eggs in each row. 



First antennae indistinctly three-jointed and sparsely armed with 

 setae; second antennae uniramose and straight, not bent across the 

 frontal margin. The antennae themselves taper strongly toward the 

 tip and the lateral margins of the head approach each other ante- 

 riorly, so that the ends of these antennae almost meet on the midline, 

 but there is no bend in them. 



First maxillae bipartite, with a simple palp armed with a single 

 seta; second maxillae very short, entirely fused, but with the line of 

 demarcation clearly indicated; they are not in line with the cephal- 

 othorax but are parallel with the trunk axis; bulla minute, spherical, 

 dark-colored; maxiUipeds with a rather long basal joint and a slender 

 terminal claw, which is reinforced by an accessoiy claw on its inner 

 margin near the tip. These maxillipeds are relatively small and are 



