100 T. GiSLEN, 



segments L = ' 2 br with a strong doi'sal spine (h = '4 — '3 of ihe 

 br of tiie segment) from the 30"' or the 40"' segment. 5"' — 12"' with 

 a large ventral spine in the distal margins of the segments. The 

 ventral spine eui-ved and projeeting over a pai't of the following seg- 

 ment, L=^'3 of the br of the eii'ral. Terminal claw about as long 

 as the preceding segment. 



B — s projecting in the cornei's. R — s h = ' s l)r with a niedio- 

 doi'sa! tubercle, shai'ply set off on the ossicle. I Hr 1 h = ' 4 br. later- 

 ally contiguous in the basal parts, with a longitudinal crista. 1 Br 2 

 h = '3 br with a similar ei'ista on the proximal ^3 of the ossicle. A 

 simiiai" prominence also on the II Br — s and (in Br I — 2. II Br — s:2. 

 Ai'ms XX. (30 mm. Br I — 9 discoidal, then oblique joints. Distal seg- 

 ments (from about the 40"' segment) provided with a slight dorsal 

 spine as in an Aste)-omeli'a-speG\es. Ex. of syzygies: 3 + 4, 10+17, 

 23 + 24, 30 + 31 . . etc. 



P, II: 4,5 nun. Pg 10; 8 mm. P3 11: S mm. P,, 12; 9 mm. (l^^ seg- 

 ment L = V2 br, 2'' about cubical, 3'' and the following ones L = 1 '2 

 — 2 X br, prismatic, smooth). Distal p. IS; 10 mm. (the hist seg- 

 ments more delicate, slightly collar-shaped). — Disk thrown off. foloui- 

 (in spirit): arms and p — s white-grey. Cii'ri \iolet. 



Sp. 2 (St. 48). C. XV 64—70; 35—44 nun. Ai'uis XiW :>d mm. 

 II Br— s: 2. 



P, 8; 4,2 mm. P, 10: 5,2 mm. P3 10: 5,8 mm. 



.S>. 3 (St. 59) C. XVT 01—08; 30—35 mm. A dorsal spine from 

 the 22"'(— 20"') segment: the ventral spine from the 4"'-the 10"' 

 (ori2">) one. 



R— s h = V6 br. I Brax h = ' 2 br. Aims XI\' |-, broken. — 

 Pj 7 + , 3,5 mm. Disk 0,:. mm. with cal(;areous granules. — Differing 

 from Sp. I l)y the lower and dorsally smooth (M. A younger spe- 

 cimen. 



Sp. 4 (St. 5!)) ("d h = 3 mm., doi-sally as in Sp. I. ('. XXII 

 06 — 84; 30 — 48 mm. The ventral s})ine from the 4"' to the 13"' seg- 

 ment. — Primipostaxillaries basally (contiguous inside. I Br 1 and II 

 Br 1 with the proximal borders somewhat bent outwards on both sides 

 of the median line. In the latter case (II Br I) this condition only on 

 the outside. Arms XX, bi'oken. II Br — s : 2. Syzygies with an in- 

 terval of — 7 oblique ai"ticulations. The Br — s with a blunt dorsal 



