6 Ech. 
ECH1N0DE U MATA. 
Gregory, J. W. Rhynchopygus woodi, Forbes sp., from the English 
Pliocene. Geol. Mag. vii (1890), pp. 300-303, 1 fig. [Abstr. in J.R. 
Micr. Soc. 1890, pt. 5, No. 78, p. 612.] 
[Vide infra , Systematic.] 
Hartog, M. M. On the Madreporic Systems of Echinoderms. Zool. 
Anz. xiii, 1890, No. 330, pp. 136 & 137. [Abstr. in J. R. Micr. Soc. 
1890, pt. 3, No. 76, p. 337.] 
Complains that M. Cu6not, in his “ Etudes Anatomiques sur les 
Ophiures,” had first ignored, and then misquoted, his note at the British 
Association, at Manchester, on the madreporic system of Echinodermata. 
Hensen, — . Das Plankton der Ostlichen Ostsee, v. Larven von 
Muscheln, Schnecken, Sagitten, und Wurm - larven, Oikopleura , 
und Larven von Ophioglypha. Ber. Komm. wiss. Unters. deutsch, 
Meere, vii, 2, pp. 115 & 116. 
Occurrence of larva of Ophioglypha, p. 116. 
HihtouARD, M. E. French Holothurians. J. R. Micr, Soc. 1890,.pt. 3, 
No. 76, pp. 335 & 336. [Abstr. of paper in Arch. Z. exp6r. vii, 1889, 
pp. 535-704, 8 pis.] 
Hertwig, O. Experimentelle Studien am tierischen Ei vor, wahrend, 
und nach der Befruchtung. Jen. Z. Nat. xxiv, pp. 268, et seq ., taf. 
viii-x. 
Eggs experimented on : Strongylocentrotus lividus , Echinus microtuber- 
culatus , Sphcerechinus granularis , Asterias glacialis , and Aslropecten sp. 
Chapter I. Over-ripeness of the ova, and the phenomena occasioned by 
it. Chapter II. Relation of the sexual products to cold. Chapter III. 
Staiuing the living cell substance with methyl blue. Chapter IV. Par- 
thenogenesis in Starfish. [See below, Anatomy, &c.] 
Ives, J. E. Echinoderms from the Northern Coast of Yucatan and the 
Harbour of Vera Cruz. P. Ac. Philad. 1890, pt. ii (April-Septem- 
ber), pp. 317-340, pi. viii. 
From Yucatan — Holothuria heilprini , n. sp., H. silamensis , n. sp., H. 
nitida , n. sp., Toxopneustes variegatus , Lam., Echinaster braziliensis , M. & 
Tr., Luidia alternata, Say. From Yera Cruz — Diadema setosum , Gray, 
Echinornetra subangularis , Lesko, Mellila pentapora , Gmelin, Thy raster 
serpentarius , M. & Tr., Astropecten arliculatus ) Say, Ophiura cinerea, M. & 
Tr., Ophiothrix angidata , Say. [ Vide infra , Systematic.] 
Janet, A. Note sur un Echinocorys carinatus, presentant neuf pores 
genitaux. Bull. Soc. Geol. (3) xviii, No. 2, pp. 158-160, with fig. 
[ Vide infra , Anatomy.] 
John, Georg. Ueber bohrende Seeigel. Arch. f. Nat. i, Heft 3, 1889, 
pp. 268-302, pi. xv. [See Zool. Rec. 1889, Echinoderms, p. 7.] 
Criticism and review by Simroth in Z. Naturw. lxiii, Heft 1 & 2, 
p. 224. [Abstr. in Am. Nat. xxiv, No. 279, March, 1890, p. 280.] 
