48 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Cuticle: as in the preceding specimen, Dimensions: length, 158 mm. ; 
greatest diameter of body, 9 mm. 
Especial Diagnostic Characters. The peculiarities of the cuticular tubercles, 
and the uniform coloration. 
Comparisons. The papillæ of the cuticle have some resemblance to those of 
C. hamatus Römer, from West Africa. But the arrangement and form of the 
papilla of the latter form is not quite the same, judging from Römer’s (96) 
description of them: “Die Haut ist mit Papillen bedeckt von der Form 
kleiner Hiigel und spitzer Zacken. Sie sind ganz niedrig; ihre Form ist 
nicht gleichmässig, auch ihre Entfernung von einander nicht die gleiche, aber 
sie haben im allgemeinen denselben Habitus. . . . Kopfende des Weibchens 
stark zugespitzt.” 
Thus far only two specimens observed, from Iowa and Maryland, respectively. 
I have thé pleasure of naming this species in honor of my friend Dr. Thos. 
H. Morgan, of Bryn Mawr College, who kindly gave me the first specimen 
seen. 
14. C. puerilis, n. sp. 
Figs. 101-105, b, Plate 13, 
(Type, 1 male: Leidy coll. no. 5071, from a cockroach, A second male se- 
cured by me in Chester County, Pennsylvania.) 
Form, Anterior portion of the body more slender than the posterior. 
Head end (Figs. 101, 102) dorso-ventrally flattened, obliquely truncated ter- 
minally, mouth opening terminal. Middle and posterior portions of the 
body horizontally flattened in the larger specimen, cylindrical in the smaller. 
Posterior end of the body (Fig. 103) narrower than the preceding part, almost 
cylindrical, terminally rounded; a median groove is present on its ventro- 
terminal end, and to each side of this groove the integument forms a slightly 
elevated ridge. 
Cuticle. With four kinds of prominences (Fig. 105, 6): (1) the largest tuber- 
cles, usually of a rounded-conical shape, but vary somewhat in length (the 
length is usually one third greater than the largest diameter, which is at the 
base). On the rounded apex occur short, rather thick hairs, terminally 
pointed, from 5 to 10 hairs to each tubercle. (2) Long hyaline, slender pro- 
cesses, which vary considerably in form, but are usually either finger-shaped or 
club-shaped ; these are the highest and least abundant of all cuticular promi- 
nences, and are devoid of hairs. (3) These most abundant tubercles are usu- 
ally conical in shape, and from one fourth to one half the length of the first 
kind; each bears on its summit a single strong hair, which is slightly longer 
than the hairs of the 1st kind of tubercles. (4) The smallest tubercles are not 
quite as high as the preceding kind, are hemispherical, and without hairs. On 
surface views of the cuticle (Figs. 104, 105, a) the various kind of tubercles are 
seen to be closely arranged together, without any regular distribution into 
groups. All these tubercles are very small, and may be distinguished clearly 
only on thin sections studied with the y immersion lens of Zeiss, 
